package com.iman.common.freemarker.directive;

import java.io.IOException;
import java.util.Map;

import com.iman.common.freemarker.directive.OverrideDirective.TemplateDirectiveBodyOverrideWraper;
import freemarker.core.Environment;
import freemarker.template.TemplateDirectiveBody;
import freemarker.template.TemplateDirectiveModel;
import freemarker.template.TemplateException;
import freemarker.template.TemplateModel;

/**
 */
public class SuperDirective implements TemplateDirectiveModel {
	public final static String DIRECTIVE_NAME = "super";

	public void execute(Environment env, Map params, TemplateModel[] loopVars, TemplateDirectiveBody body) throws TemplateException, IOException {
		TemplateDirectiveBodyOverrideWraper current = (TemplateDirectiveBodyOverrideWraper) env.getVariable(DirectiveUtils.OVERRIDE_CURRENT_NODE);
		if (current == null) {
			throw new TemplateException("<@super/> direction must be child of override", env);
		}
		TemplateDirectiveBody parent = current.parentBody;
		if (parent == null) {
			throw new TemplateException("not found parent for <@super/>", env);
		}
		parent.render(env.getOut());
	}

}
